What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

Web Technologies Directory

Explore 9166+ technologies powering the modern web. Discover which CMS, frameworks, analytics, hosting, and tools websites use.

9166Technologies tracked

95,120Total detections

16Categories

Browse by Category

Web Hosting & Cloud Providers

See which hosting providers and cloud platforms power the web. AWS, Cloudflare, Vercel, Netlify, and more.

1932 technologies

E-commerce Platforms & Payment

Browse e-commerce platforms and payment processors used by online stores. WooCommerce, Magento, Stripe, and more.

878 technologies

Content Management Systems

Discover the most popular content management systems powering websites worldwide. Compare WordPress, Shopify, Wix, and more.

716 technologies

Analytics & Tracking Tools

Find out which analytics and tracking tools websites use to measure performance. Google Analytics, Hotjar, Mixpanel, and more.

634 technologies

WordPress Plugins

Discover the most popular WordPress plugins for SEO, forms, caching, and more. Yoast SEO, Elementor, WP Rocket, and more.

545 technologies

Live Chat & Customer Support

Discover live chat widgets and customer support tools. Zendesk, Intercom, Crisp, Tidio, and more.

348 technologies

Advertising & Ad Networks

Explore advertising platforms and ad networks used across the web. Google Ads, Facebook Pixel, and more.

303 technologies

JavaScript Libraries & Utilities

Browse popular JavaScript utility libraries. jQuery, Lodash, GSAP, Three.js, D3.js, and more.

261 technologies

Web Frameworks & Libraries

Explore JavaScript frameworks and meta-frameworks used to build modern web applications. React, Next.js, Vue, Angular, and more.

233 technologies

Payment Processors

Explore payment gateways and processors used by websites. Stripe, PayPal, Klarna, and more.

163 technologies

Security & Bot Protection

Explore web security tools and bot protection services. Cloudflare Turnstile, reCAPTCHA, Sucuri, and more.

110 technologies

Reviews & Social Proof

Browse review platforms and social proof tools. Trustpilot, Yotpo, Judge.me, and more.

102 technologies

UI & CSS Frameworks

Discover the CSS frameworks and UI component libraries that shape modern web design. Tailwind CSS, Bootstrap, Material UI, and more.

94 technologies

Email Marketing & Automation

Find email marketing platforms and automation tools. Mailchimp, Klaviyo, SendGrid, ConvertKit, and more.

64 technologies

Web Fonts & Icon Libraries

See which font services and icon libraries websites use. Google Fonts, Adobe Fonts, Font Awesome, and more.

24 technologies

Other Technologies

Miscellaneous web technologies and tools detected across websites.

2759 technologies